ATE376177T1 - DEVICE FOR CONTINUOUS MONITORING EMISSIONS OF VARIOUS METALS IN ROUGH ENVIRONMENTS - Google Patents
DEVICE FOR CONTINUOUS MONITORING EMISSIONS OF VARIOUS METALS IN ROUGH ENVIRONMENTSInfo
- Publication number
- ATE376177T1 ATE376177T1 AT00947584T AT00947584T ATE376177T1 AT E376177 T1 ATE376177 T1 AT E376177T1 AT 00947584 T AT00947584 T AT 00947584T AT 00947584 T AT00947584 T AT 00947584T AT E376177 T1 ATE376177 T1 AT E376177T1
- Authority
- AT
- Austria
- Prior art keywords
- background
- light emission
- nitrogen
- microwave
- continuous monitoring
- Prior art date
Links
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N1/1409—Suction devices, e.g. pumps; Ejector devices adapted for sampling molten metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/66—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence
- G01N21/68—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence using high frequency electric fields
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/714—Sample nebulisers for flame burners or plasma burners
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/73—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using plasma burners or torches
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/74—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using flameless atomising, e.g. graphite furnaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N2001/222—Other features
- G01N2001/2223—Other features aerosol sampling devices
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
A continuous emissions monitor for the measurement of vapor phase and particulate-based metals in gas streams such as those at coal-fired utility plants, incinerators and manufacturing facilities, in which a pulsed plasma source (10), utilizing a resonant reentrant microwave cavity (12) which is powered by a microwave generator (34), operates at sub atmospheric pressures (<50 Torr.) by using a pump (48) in order to eliminate quenching of the light emission processes by other species in the gas stream and reduce the background emission and where the pulsed operation of the source reduces background light emission from oxides of nitrogen produced in plasma sources operating with nitrogen and oxygen gases thus enhancing the contrast and signal-to-background; resulting in the instrument having a minimum detection level of 0.01 micrograms/m-3 for mercury, as well as, other metal elements such as arsenic and selenium, and requiring less than 10 Watts of microwave power.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14534199P | 1999-07-23 | 1999-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE376177T1 true ATE376177T1 (en) | 2007-11-15 |
Family
ID=22512652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT00947584T ATE376177T1 (en) | 1999-07-23 | 2000-07-21 | DEVICE FOR CONTINUOUS MONITORING EMISSIONS OF VARIOUS METALS IN ROUGH ENVIRONMENTS |
Country Status (7)
Country | Link |
---|---|
US (1) | US6577390B1 (en) |
EP (1) | EP1196764B1 (en) |
AT (1) | ATE376177T1 (en) |
AU (1) | AU6116400A (en) |
CA (1) | CA2380478A1 (en) |
DE (1) | DE60036801T2 (en) |
WO (1) | WO2001007897A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6774993B2 (en) * | 2001-04-03 | 2004-08-10 | Agilent Technologies, Inc. | Method and apparatus for atomic emission spectroscopy |
US7123361B1 (en) | 2003-03-05 | 2006-10-17 | Verionix Incorporated | Microplasma emission spectrometer |
US7309842B1 (en) | 2004-03-19 | 2007-12-18 | Verionix Incorporated | Shielded monolithic microplasma source for prevention of continuous thin film formation |
MX2009000535A (en) * | 2006-07-20 | 2009-03-09 | Albemarle Corp | Process technology for recovering brominated styrenic polymers from reaction mixtures in which they are formed and/or converting such mixtures into pellets or into granules or pastilles. |
WO2009020881A1 (en) * | 2007-08-07 | 2009-02-12 | Pivotal Systems Corporation | Method and apparatus for identifying the chemical composition of a gas |
CN103278553A (en) * | 2013-04-27 | 2013-09-04 | 天津大学 | Method for determination of volatile element mercury in fire coal product |
FI20155549L (en) * | 2015-07-10 | 2017-01-11 | Outotec Finland Oy | METHOD AND APPARATUS FOR OPTICAL RADIATION SPECTROSCOPY OF FLUIDS |
FI129477B (en) * | 2019-05-17 | 2022-03-15 | Andritz Oy | Determining the reduction degree of a recovery boiler |
CN113340669B (en) * | 2021-07-05 | 2023-01-24 | 国能神皖能源有限责任公司 | Full-automatic powder tube sampling device and method for LIBS coal quality on-line analysis |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3843257A (en) | 1971-11-30 | 1974-10-22 | Monsanto Res Corp | Microwave-excited emission detector |
CA1098809A (en) * | 1976-07-20 | 1981-04-07 | Dennis J. C. Macourt | Particle coating analysis and mineral prospecting |
US4833322A (en) * | 1986-05-02 | 1989-05-23 | Shell Oil Company | Method and apparatus for analysis of material |
JP2607675B2 (en) * | 1989-03-31 | 1997-05-07 | 株式会社日立製作所 | Atomic absorption spectrometer |
US5242143A (en) | 1992-03-12 | 1993-09-07 | Tachi-S Co. Ltd. | Cover for slide rail of automotive seat |
US5671045A (en) | 1993-10-22 | 1997-09-23 | Masachusetts Institute Of Technology | Microwave plasma monitoring system for the elemental composition analysis of high temperature process streams |
US5479254A (en) | 1993-10-22 | 1995-12-26 | Woskov; Paul P. | Continuous, real time microwave plasma element sensor |
US5596405A (en) * | 1995-10-03 | 1997-01-21 | The United States Of America As Represented By The Secretary Of The Navy | Method of and apparatus for the continuous emissions monitoring of toxic airborne metals |
US5825485A (en) | 1995-11-03 | 1998-10-20 | Cohn; Daniel R. | Compact trace element sensor which utilizes microwave generated plasma and which is portable by an individual |
US5986757A (en) * | 1997-09-17 | 1999-11-16 | The United States Of America As Represented By The Secretary Of The Navy | Correction of spectral interferences arising from CN emission in continuous air monitoring using inductively coupled plasma atomic emission spectroscopy |
US5854431A (en) * | 1997-12-10 | 1998-12-29 | Sandia Corporation | Particle preconcentrator |
US5909277A (en) | 1998-02-13 | 1999-06-01 | Massachusetts Institute Of Technology | Microwave plasma element sensor |
-
2000
- 2000-07-21 CA CA002380478A patent/CA2380478A1/en not_active Abandoned
- 2000-07-21 EP EP00947584A patent/EP1196764B1/en not_active Expired - Lifetime
- 2000-07-21 AU AU61164/00A patent/AU6116400A/en not_active Abandoned
- 2000-07-21 US US10/031,527 patent/US6577390B1/en not_active Expired - Fee Related
- 2000-07-21 DE DE60036801T patent/DE60036801T2/en not_active Expired - Fee Related
- 2000-07-21 WO PCT/US2000/019930 patent/WO2001007897A1/en active IP Right Grant
- 2000-07-21 AT AT00947584T patent/ATE376177T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2001007897A1 (en) | 2001-02-01 |
DE60036801D1 (en) | 2007-11-29 |
CA2380478A1 (en) | 2001-02-01 |
EP1196764B1 (en) | 2007-10-17 |
EP1196764A4 (en) | 2005-11-16 |
AU6116400A (en) | 2001-02-13 |
US6577390B1 (en) | 2003-06-10 |
EP1196764A1 (en) | 2002-04-17 |
DE60036801T2 (en) | 2008-07-24 |
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Legal Events
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RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |